What was found
(CAN) DURING CLIMB OUT, NR 1 ENGINE TORQUE INDICATION WENT TO 165 PERCENT. POWER WAS REDUCED BUT TORQUE INDICATION REMAINED THE SAME, ALL OTHER ENGINE PARAMETERS APPEARED TO BE NORMAL AND NO ACFT YAW WAS NOTICED. FLIGHT CREW FOLLOWED THEIR QRH AND PERFORMED A PRECAUTIONARY ENGINE SHUTDOWN. AN EMERGENCY WAS DECLARED, THE ACFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. NR 1 TORQUE SIGNAL CONDITIONING UNIT, TSCU WAS REPLACED AND TESTED BEFORE RETURNING THE ACFT TO SERVICE.